Integrated Circuit - AS3320, Multi-Mode VCF, Alfa, 18-Pin Dip
The AS3320 is Alfa’s version of the CEM3320 IC. The AS3320 is a high performance voltage controlled four-pole filter with on-chip voltage controllable resonance IC. The four independent sections may be interconnected to provide a wide variety of filter responses, such as low pass, high pass, band pass and all pass. A single input exponentially controls the frequency over greater than a ten octave range with little control voltage feedthrough. Another input controls the resonance in a modified linear manner from zero to low distortion oscillation. For those demanding applications, provision has been made to allow trimming for improved control voltage rejection. Each filter section features a variable gain cell which is fully temperature compensated, exhibits a better signal-to-noise ratio and generates its low distortion predominantly in the second harmonic. The device includes a minus two volt regulator to ensure low power dissipation and consequent low warm-up drift.
The AS3320 is available in an 18-pin DIP package.
Features
- Voltage controllable frequency - 12 octave range
- Voltage controllable resonance - from zero to oscillation
- Accurate exponential frequency scale
- Accurate linear resonance scale
- Low control voltage feedthrough -45dB typical
- Filter configurable into LPF, HPF, all pass, etc.
- Low noise: -86dB typical
- Low distortion in passband - 0.1% typical
- Low warm up drift
- Configurable into low distortion voltage controlled sine wave oscillator
- Bandwidth till 800kHz
Amount of Resonance Obtainable Before Oscillation | 30 dB | ||
Buffer Input Bias Current | ±30 nA | ||
Buffer Output Impedance | 50 Ω | ||
Buffer Sink Capability | 0.5 mA | ||
Buffer Slew Rate | 3 V/µS | ||
Distortion in Bandreject | 0.3% | ||
Distortion in Passband | 0.1% | ||
Distortion of Sine Wave Oscillation | 0.5% | ||
Exponential Error of Pole Frequency Control Scale | 4% | ||
Gain of Variable Gain Cell at VCFI=0 | 1 | ||
Gm of Resonance Control Element at ICR=100µA | 1 mmhos | ||
Input Bias Current of Frequency Control Input | 1 µA | ||
Input Impedance of Resonance Signal Input | 3.6 KΩ | ||
Internal Reference Current | 63 µA | ||
Max. Current through any pin | ±40 mA | ||
Max. Operating Temperature Range | - 25°C to 75°C | ||
Max. Storage Temperature Range | - 55°C to 150°C | ||
Max. Voltage between Cell Input and GND pins | +0.5 V, -6 V | ||
Max. Voltage between Frequency Control and GND pins | ±6 V | ||
Max. Voltage between Resonance Control and GND pins | +2 V, -18 V | ||
Max. Voltage between Vcc and GND pins | +18 V, -0.5 V | ||
Max. Voltage between Vcc and Vee pins | +22 V, -0.5 V | ||
Max. Voltage between Vee and GND pins | -4 V, -0.5V | ||
Max Gain of Variable Gain Cell | 3 | ||
Negative Supply Current | 8.5 mA | ||
Negative Supply Range (Current limiting resistor always required) | -4V to -18V | ||
Output Impedance of Gain Cell | 1 MΩ | ||
Output Noise re Max Output | -86 dB | ||
Output Swing At Clipping | 12 V.P.P. | ||
Output voltage DC | 6.5 V | ||
Pole Frequency Control Feedthrough | 60 mV | ||
Pole Frequency Control Range | 10,000:1 | ||
Pole Frequency Warm-up Drift | 0.5% | ||
Positive Supply Current | 5 mA | ||
Positive Supply Range | +9V to +18V | ||
Rejection in Bandreject | 83 dB | ||
Resonance Control Feedthrough | 0.2 V | ||
Sensitivity of Pole Frequency Control Scale, Midrange | 60 mV/decade | ||
Tempco of Pole Frequency Control Scale | 3300 ppm | ||
Tempco of Variable Gain Cell | 500 ppm | ||
Voltage at the negative supply pin | -2.7 V |
Packaging Dimensions | 0.916 in. × 0.358 in. × 0.308 in. | ||
Weight (Packaging) | 0.0044 lbs. |
Datasheet | All Models |
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Specifications, Files, and Documents
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